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The dimension of time remains an unexplorable frontier and constant constraint. It always moves at the rate of second per second. The silver lining for humans is that we have an imagination that doesn’t face these limitations. We can think about next week, then jump 20 years into the past, then think about what might happen in an hour. Any moment our minds wander to another era we become mental time travelers.

If you put a carrot and a cookie in front of a child, which do you think most will pick? Self-control in the face of sugary goodness as an adult can be tough. And for kids, it’s even harder.

Childhood obesity is a massive epidemic in the United States―nearly one in three children and teens are overweight or obese. Foundations and others across the country are pouring money into eliminating the issue: The Robert Wood Johnson Foundation alone has set aside $1 billion just for that purpose.

Sketches of emotions that were used to create Facebook’s emoticons. Credit: Matt Jones

Charles Darwin described 50 emotional states, such as anxiety, fear, embarrassment and guilt, in his book TheExpression of Emotions in Man and Animals, written in 1872. Darwin’s descriptions were used by a Pixar animator Matt Jones to sketch what each emotional state looks like. Jones’ sketches eventually morphed into the 16 emoticons we recognize today on Facebook.

Professionals may believe they can maintain an ethical reputation by merely refraining from morally questionable practices: Don’t steal, cheat, or bully others. But this alone is not enough. If a higher-up in your organization is found guilty of unethical behavior, your reputation can become tainted merely because you work at the same place.

People are remarkably resilient. They bounce back from double faulting to lose a tennis match, lead relatively happy lives despite failing to pass the first round of qualification for Jeopardy, and persist in submitting papers for publication even after being told by a snarky reviewer that it might be time to read an intro social psychology textbook. Such evidence can be found not only from my own life, but also from a large empirical literature that attests to people’s talent at maintaining a sense of adequacy, worth, and esteem.

The European Journal of Social Psychology recently had a special issue on the social psychology of climate change, edited by Kelly Fielding, Matthew Hornsey, and Janet Swim. The issue can be accessedhere.)

This Sunday, nearly 10 million eligible Greek citizens will vote over the future of their country, potentially influencing the future of the European Union and the strength of the Euro. Alexis Tsipras, the Prime Minister of Greece, has placed his faith in the Greek population, insisting voters will follow his recommendation and reject the referendum. The alternative is accepting a proposal offered by the IMF, the European Central Bank, and the European Commission, which outlines terms Greece must follow to repay their debt.